Blogstronomy

What's the Difference Between a Comet, an Asteroid and a Meteorite?

Question posed by Emily FG. You can find out the difference between a comet and meteor in this post, and a meteorite is just what we call meteors after they have landed. What's not covered in that post is what an asteroid actually is. So... What's an Asteroid? Asteroids are lumps of rock and/or metal that are in direct orbit around the Sun (i.e. they're not in orbit around anything else). Like so many astronomical objects, asteroids are very loosely defined- most of the moons of our solar s

Is it possible for humans to create black holes on Earth?

Is it possible for humans to create black holes on Earth?

Are the Planets Ever Crescent?

When we see Jupiter, Venus, Mars etc are they ever crescent like the moon is? If so, how long are the cycles? - Question posed by @KnikiTea. The Moon's phases as seen from Earth Do We Ever See the Planets as Crescents? We've all seen the Moon going through it's phases: these are the times when different portions of the Moon's face as observed by us are lit up by the Sun. You can read this post to find out all about the phases of the Moon, and these all apply to any bodies in space,